diff --git a/src/app/layout.tsx b/src/app/layout.tsx
index b7e6a91..4f3f3c8 100644
--- a/src/app/layout.tsx
+++ b/src/app/layout.tsx
@@ -15,13 +15,24 @@ export const metadata: Metadata = {
   ],
 };
 
+const themeScript = `
+  try {
+    const savedTheme = localStorage.getItem('portfolio-theme');
+    const systemTheme = matchMedia('(prefers-color-scheme: dark)').matches ? 'dark' : 'light';
+    document.documentElement.dataset.theme = savedTheme || systemTheme;
+  } catch {}
+`;
+
 export default function RootLayout({
   children,
 }: {
   children: React.ReactNode;
 }) {
   return (
-    <html lang="en" data-theme="light">
+    <html lang="en" suppressHydrationWarning>
+      <head>
+        <script dangerouslySetInnerHTML={{ __html: themeScript }} />
+      </head>
       <body>
         <ThemeProvider>{children}</ThemeProvider>
       </body>
diff --git a/src/context/ThemeContext.tsx b/src/context/ThemeContext.tsx
index 9523f0f..3025781 100644
--- a/src/context/ThemeContext.tsx
+++ b/src/context/ThemeContext.tsx
@@ -18,14 +18,15 @@ const ThemeContext = createContext<ThemeContextType>({
 
 export const ThemeProvider: React.FC<{ children: React.ReactNode }> = ({ children }) => {
   const [theme, setThemeState] = useState<Theme>('light');
-  const [mounted, setMounted] = useState(false);
 
   useEffect(() => {
     const savedTheme = localStorage.getItem('portfolio-theme') as Theme | null;
-    const initialTheme = savedTheme || 'light';
+    const systemTheme: Theme = window.matchMedia('(prefers-color-scheme: dark)').matches
+      ? 'dark'
+      : 'light';
+    const initialTheme = savedTheme || systemTheme;
     setThemeState(initialTheme);
     document.documentElement.setAttribute('data-theme', initialTheme);
-    setMounted(true);
   }, []);
 
   const setTheme = (newTheme: Theme) => {
diff --git a/src/styles/globals.css b/src/styles/globals.css
index a8cc991..5142318 100644
--- a/src/styles/globals.css
+++ b/src/styles/globals.css
@@ -21,18 +21,6 @@ html {
   color-scheme: light;
 }
 
-@media (max-width: 1024px) {
-  html {
-    font-size: 93.75%;
-  }
-}
-
-@media (max-width: 650px) {
-  html {
-    font-size: 87.5%;
-  }
-}
-
 html[data-theme="dark"] {
   color-scheme: dark;
 }
@@ -117,9 +105,11 @@ body {
 }
 
 .section-title {
-  font-size: var(--font-size-h2);
-  line-height: var(--line-height-h2);
-  font-weight: 700;
+  max-width: 24ch;
+  font-size: clamp(1.875rem, 3vw, 2.5rem);
+  line-height: 1.15;
+  font-weight: 760;
+  letter-spacing: -0.035em;
   color: var(--text-primary);
   margin-bottom: 0.75rem;
 }
@@ -158,6 +148,20 @@ body {
     box-shadow var(--motion-duration-default) ease,
     transform var(--motion-duration-fast) var(--motion-ease-out);
   border: 1px solid transparent;
+  white-space: nowrap;
+}
+
+.pill-btn:focus-visible,
+a:focus-visible,
+button:focus-visible,
+input:focus-visible {
+  outline: 3px solid var(--focus-ring);
+  outline-offset: 3px;
+}
+
+.pill-btn:active,
+button:active:not(:disabled) {
+  transform: translateY(1px) scale(0.99);
 }
 
 .pill-btn-outline {
diff --git a/src/styles/tokens.css b/src/styles/tokens.css
index 730ebc5..b57ded0 100644
--- a/src/styles/tokens.css
+++ b/src/styles/tokens.css
@@ -11,7 +11,7 @@
   --color-blue-800: #091C3F;
   --color-blue-900: #07132F;
   --color-blue-950: #010D27;
-  --color-blue-white: #FFFFFF;
+  --color-blue-white: #F8FAFF;
   --color-slate-300: #C3CFE0;
   --color-slate-400: #A3B1C6;
   --color-slate-600: #667085;
@@ -20,7 +20,7 @@
   --color-border-dark: #1E3458;
   --color-border-strong-light: #A9BEDA;
   --color-border-strong-dark: #426B9D;
-  --color-black: #000000;
+  --color-black: #07132F;
   --space-0: 0;
   --space-1: 0.25rem;
   --space-2: 0.5rem;
@@ -67,7 +67,7 @@
   --font-size-h3: 1.25rem;
   --font-size-body-large: 1.125rem;
   --font-size-body-default: 1rem;
-  --font-size-body-small: 0.875rem;
+  --font-size-body-small: 0.9375rem;
   --font-size-label-small: 0.75rem;
   --font-size-button: 0.9375rem;
   --line-height-display-hero: 4.5rem;
@@ -77,7 +77,7 @@
   --line-height-h3: 1.75rem;
   --line-height-body-large: 1.875rem;
   --line-height-body-default: 1.625rem;
-  --line-height-body-small: 1.375rem;
+  --line-height-body-small: 1.5rem;
   --line-height-label-small: 1.125rem;
   --line-height-button: 1.25rem;
   --letter-spacing-eyebrow: 0.16em;
@@ -87,9 +87,9 @@
   --motion-ease-in-out: cubic-bezier(0.77, 0, 0.175, 1);
 
   /* Semantic Tokens (Light) */
-  --bg-page: #FFFFFF;
-  --bg-surface: #FAFAFA;
-  --bg-raised: #FFFFFF;
+  --bg-page: #F8FAFF;
+  --bg-surface: #F1F6FD;
+  --bg-raised: #FCFDFF;
   --bg-subtle: #E6F0FE;
   --text-primary: #0B2F5F;
   --text-secondary: #38526E;
@@ -100,7 +100,7 @@
   --accent-default: #3D8AFA;
   --action-link: #1557A6;
   --action-primary-bg: #103F7F;
-  --action-primary-fg: #FFFFFF;
+  --action-primary-fg: #F8FAFF;
   --action-primary-hover: #0B3268;
   --action-primary-pressed: #08284F;
   --brand-band: #103F7F;
@@ -131,7 +131,7 @@
   --text-primary: #F8FAFF;
   --text-secondary: #C3CFE0;
   --text-muted: #A3B1C6;
-  --text-on-band: #FFFFFF;
+  --text-on-band: #F8FAFF;
   --border-default: #1E3458;
   --border-strong: #426B9D;
   --accent-default: #82B5FF;